Table 2.

Univariate and multivariate analysis for CSS.

Variables	Univariate analysis			Multivariate analysis
	HR	95% CI	P value	HR	95% CI	P value
Age	1.141	1.106-1.177	0.001
<65				Reference
≥65				1.077	1.042-1.112	0.001
Race	0.946	0.921-0.972	0.001
White				Reference
Black				0.948	0.907-0.991	0.019
Other				0.884	0.830-0.942	0.001
Sex	0.844	0.818-0.871	0.001
Male				Reference
Female				0.837	0.811-0.864	0.001
Grade	1.09	1.055-1.126	0.001
I-II				Reference
III-IV				1.138	1.101-1.176	0.001
T stage	1.154	1.136-1.171	0.001
T1				Reference
T2				1.126	1.188-1.356	0.001
T3				1.338	1.248-1.435	0.001
T4				1.577	1.481-1.679	0.001
N stage	1.004	0.986-1.022	0.665	Not entered
N0
N1
N2
N3
Therapy	0.806	0.791-0.821	0.001
Chemotherapy				Reference
Radiotherapy				1.208	1.150-1.270	0.001
Chemo-radiotherapy				0.706	0.677-0.735	0.001